From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11420 invoked by alias); 29 Dec 2014 23:44:54 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 11390 invoked by uid 48); 29 Dec 2014 23:44:46 -0000 From: "manu at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/64439] Incorrect location of -Wunused-value or false negative Date: Mon, 29 Dec 2014 23:44:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Version: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: manu at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-12/txt/msg02917.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D64439 Manuel L=C3=B3pez-Ib=C3=A1=C3=B1ez changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |manu at gcc dot gnu.org --- Comment #1 from Manuel L=C3=B3pez-Ib=C3=A1=C3=B1ez --- It doesn't seem a false negative to me.=20 It is a bit strange that we get different locations for equivalent expressi= ons: s.c:2:17: warning: value computed is not used [-Wunused-value] a && ((b =3D 0) !=3D 0);=20 ^ s.c:3:18: warning: value computed is not used [-Wunused-value] ((b =3D 0) !=3D 0) && a; ^ But I'm not sure if it is a bug. Someone would need to look at gcc while compiling the testcase under a debugger to understand why the difference ex= ists at all. >>From gcc-bugs-return-471911-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Dec 29 23:59:00 2014 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 15876 invoked by alias); 29 Dec 2014 23:58:57 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 15858 invoked by uid 48); 29 Dec 2014 23:58:50 -0000 From: "dark_footix at yahoo dot fr" To: gcc-bugs@gcc.gnu.org Subject: [Bug regression/64437] hang with iconv on the configure : "checking whether the C compiler works" Date: Mon, 29 Dec 2014 23:58:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: regression X-Bugzilla-Version: 4.9.2 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dark_footix at yahoo dot fr X-Bugzilla-Status: RESOLVED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_status resolution Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-12/txt/msg02918.txt.bz2 Content-length: 496 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64437 fredm changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |RESOLVED Resolution|--- |INVALID --- Comment #5 from fredm --- Sorry, I did a mismatch of pre build lib with my previous toolchain This bug is closed